发明名称 |
MELT PROCESSABLE THERMOTROPIC AROMATIC COPOLYESTERS AND PROCESS FOR PREPARING SAME |
摘要 |
<p>Disclosed is a copolymer capable of forming an optically anisotropic melt comprising recurring structural units of Formulas I, II III; and IV: <CHEM> wherein each R is independently a chemically inert substituent. The present invention also relates to a process for preparing the copolymer and to a process for preparing dihydroxy polyphenyls which can be used as starting material to prepare the copolymer. The copolymers of the present invention usually have a low melting point below 350 DEG C and can be readily melt extruded into fibers, fibers or the like.</p> |
申请公布号 |
EP0394813(A3) |
申请公布日期 |
1992.04.08 |
申请号 |
EP19900107294 |
申请日期 |
1990.04.18 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
LEE, GUO-SHUH JOHN;BURDETT, KENNETH A.;BREWBAKER, JAMES L.;MARSHALL, WILLIAM B. |
分类号 |
C08J5/18;C07C39/15;C07C409/08;C08G63/60;C08G63/66;C08G63/682;C08G63/78;D01F6/84;(IPC1-7):C08G63/60 |
主分类号 |
C08J5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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